Guys, you need to talk with someone who is a packaging engineer. For $75 bucks you can join the International Packaging Society (IMAPS) and get a lot of this information.=20 Ceramic packages are made by a couple of companies Kyocera and NTK, there are probably more but they are the biggest. Coors may also be in this game.=20 You can also by PCB packages to put die into. But these cannot be hermetically sealed so this may not be of interest. =20 Regards, =20 Steve Adamson Market Manager=20 Asymtek 760-930-7274 office 760-802-1641 Cell =20 =20 -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of Zhang Xuming Sent: Thursday, October 19, 2006 8:00 PM To: mems-talk@memsnet.org Subject: [mems-talk] RE: Anyone know what this thing called and where to buyit from? Hi Airchie: It's called Ceramic PGA (pin grid array) package, as told by my colleague who works on MEMS packaging.